B - Transformers Index

Revision 0
Oct 26, 2016

Compatible Unit Number Code Explanation

B
(1)		 _
(2)		 _
(3)
 _
(4)		 _
(5)		 _
(6)
           
(1) Index Code Letter (B)
(2) Prefix Letter (A-F)
(3) High Voltage Rating (1-2)
(4) Low Voltage Rating (0-9)
(5) & (6) District Standard kVA Size Code Letter(s)

 

Prefix Letter A
B
C
D
E
F		 1Ø Overhead
3Ø Overhead (Special Order)
1Ø Pad-Mounted
3Ø Pad-Mounted
1Ø Submersible
3Ø Power
High Voltage Rating 1
2		 12470GrdY/7200
7200/12470Y
Low Voltage Rating 0
1
2
3
4
5
6
7
8
9		 120 (for use in 208Y/120V 3Ø Banks)
120/240
240/120
208Y/120
240/480 OH or 480/240 UG
277 (for use in 480Y/277V 3Ø Banks)
480Y/277
480
240
416Y/240

District Standard kVA Size Code Letters

*No longer purchased
Code Letter kVA Size
B 1
C 1.5
F 3*
H 5*
I 7.5*
J 10
L 15
N 25
P 37.5
Q 45*
R 50
S 75
T 100
TJ 112.5
U 150
TS 167
V 200*
VN 225
W 250
X 300
Y 333
Z 400*
ZA 450*
ZB 500
ZW 750
ZD 1000
ZH 1500
ZF 2000
ZG 2500
ZJ 3750
ZK 4200

Example: 112.5 kVA 12470 GrdY/7200V 3Ø pad-mounted transformer with 208Y/120V low side

Compatible Unit: BD13TJ

B
D
1
2
TJ
 Index Code Letter for Transformers
Prefix Letter for 3Ø Pad-Mounted Transformer
High Voltage Rating - 12470GrdY/7200
Low Voltage Rating - 208Y/120
kVA Size - 112.5

Example: 25 kVA 7200/12470Y V 1Ø overhead transformer with 120V low side

(Note: Overhead transformers with 120V low side or secondary side are referred to as cutover transformers. They are specifically for use in 208Y/120V 3Ø banks.)
Compatible Unit: BA20N

B
A
2
0
N
 Index Code Letter for Transformers
Prefix Letter for 1Ø Overhead Transformer
High Voltage Rating - 7200/12470Y
Low Voltage Rating - 120
kVA Size - 112.5

Note:

The use of code letters to designate District transformer size was discontinued in August 1998 with the introduction of SAP Work Management and the UTC (Uniquely Tracked Commodity) numbering system. Refer to Construction Standard 4-13-4.1 for a detailed explanation of UTC numbering. Compatible Units will continue to use the code letter numbering system.

Single Phase Overhead Transformers

Compatible Unit Size kVA Description Material ID
BA10B 1 12470 Grounded Y/7200-120V (T) — See Note 1 1002570
       
BA21C 1.5 7200/12470y - 120/240V (X)
 630253
       
BA20L 15 7200/12470y - 120V (Cutover) 630394
BA21L 15 7200/12470y - 120/240V 630427
BA24L 15 7200/12470y - 240/480V 630419
       
BA20N 25 7200/12470y - 120V (Cutover) 630493
BA21N 25 7200/12470y - 120/240V 630534
BA24N 25 7200/12470y - 240/480V
 630419
BA25N 25 7200/12470y - 277V 630526
       
BA20P 37.5 7200/12470y - 120V (Cutover) 630592
BA21P 37.5 7200/12470y - 120/240V 630617
BA24P 37.5 7200/12470y - 240/480V 630625
BA25P 37.5 7200/12470y - 277V
 630633
       
BA20R 50 7200/12470y - 120V (Cutover) 630691
BA21R 50 7200/12470y - 120/240V
 630708
BA24R 50 7200/12470y - 240/480V 630716
BA25R 50 7200/12470y - 277V
 630724
       
BA20S 75 7200/12470y - 120V (Cutover) 630790
BA21S 75 7200/12470y - 120/240V
 630790
BA24S 75 7200/12470y - 240/480V
 630815
BA25S 75 7200/12470y - 277V
 630823
       
BA20T 100 7200/12470y - 120V (Cutover)
 630899
BA21T 100 7200/12470y - 120/240V 630906
BA24T 100 7200/12470y - 240/480V
 630914
BA25T 100 7200/12470y - 277V
 630922
       
BA21TS 167 7200/12470y - 120/240V
 631201
BA24TS 167 7200/12470y - 240/480V 631219
BA25TS 167 7200/12470y - 277V
 631227
       
BA21W 250 7200/12470y - 120/240V
 631508
BA24W 250 7200/12470y - 240/480V
 631516
BA25W 250 7200/12470y - 277V 631524
       
BA21Y 333 7200/12470y - 120/240V
 631706
BA24Y 333 7200/12470y - 240/480V 631714
BA25Y 333 7200/12470y - 277V 631722
       
BA21ZB 500 7200/12470y - 120/240V
 632001
BA24ZB 500 7200/12470y - 240/480V
 6302019
BA25ZB 500 7200/12470y - 277V
 632027

Single Phase Pad Mounted Transformers / Loop-Feed Type

C.U Size kVA Description Material ID
BC12L 15 12470 Grounded Y/7200 - 240/120V 634015
BC14L 15 12470 Grounded Y/7200 - 480/240V 1000186
       
BC12N 25 12470 Grounded Y/7200 - 240/120V
 634263
       
BC12P 37.5 12470 Grounded Y/7200 - 240/120V
 634312
BC14P 37.5 12470 Grounded Y/7200 - 480/240V
 1001241
       
BC12R 50 12470 Grounded Y/7200 - 240/120V
 634510
       
BC12S 75 12470 Grounded Y/7200 - 240/120V
 634718
       
BC12T 100 12470 Grounded Y/7200 - 240/120V 634916
BC14T 100 12470 Grounded Y/7200 - 480/240V
 634924
       
BC12TS 167 12470 Grounded Y/7200 - 240/120V 635112

Three Phase Pad Mounted Transformers / Loop-Feed Type

C.U Size kVA Description Material ID
BD13S 75 12470 Grounded Y/7200 - 208Y/120V
 636318
       
BD13U 150 12470 Grounded Y/7200 - 208Y/120V
 636714
       
BD13X 300 12470 Grounded Y/7200 - 208Y/120V
 637019
BD16X 300 12470 Grounded Y/7200 - 480Y/277V 637035
       
BD13ZB 500 12470 Grounded Y/7200 - 208Y/120V
 637217
BD16ZB 500 12470 Grounded Y/7200 - 480Y/277V
 637233
       
BD13ZW 750 12470 Grounded Y/7200 - 208Y/120V 637415
BD16ZW 750 12470 Grounded Y/7200 - 480Y/277V 637431
       
BD13ZD 1000 12470 Grounded Y/7200 - 208Y/120V
637605
BD16ZD 1000 12470 Grounded Y/7200 - 480Y/277V
 637613
       
BD16ZH 1500 12470 Grounded Y/7200 - 480Y/277V 637811
       
BD16ZF 2000 12470 Grounded Y/7200 - 480Y/277V 638017
       
BD16ZG 2500 12470 Grounded Y/7200 - 480Y/277V
 638215

Three Phase Power Transformer

C.U Size kVA Description Material ID
BF16ZJ 3750 12470 Grounded Y/7200 - 480Y/277V & 416y/240V 638413
       
BF16ZK 4200/
5250		 12470 Grounded Y/7200 - 480Y/277V & 416y/240V 638504

Single Phase Submersible Transformers

C.U Size kVA Description Material ID
BE11R 50 12470Grdy/7200 - 120/240V (Loop Feed) 640509
       
BE11S 75 12470Grdy/7200 - 120/240V (Loop Feed) 640608
       
BE11T 100 12470Grdy/7200 - 120/240V (Loop Feed) 640707
       
BE15T 100 12470Grdy/7200 - 277V (Radial Feed) 1002444
       
BE11TS 167 12470Grdy/7200 - 120/240V (Loop Feed) 640806
       
BE15TS 167 12470Grdy/7200 - 277V (Radial Feed) 1000911